Solidated



MBROGK NAILING APPARATUS.

A(No Model.)l

Patented'Apr. 5, 18978.

T z noRms'PETERs w, Now um Nrrnn STATES PATENT FFICE.

MATTHIAS BROCK, or BOSTON, MASSACHUSETTS, ASsIeNoR Toy THE coN-SoLIDATnD a MOKAY LASTINGMAOHINE COMPANY',-I on PORTLAND,

MAINE.

NAILINGAPPARATUS.' v

SPECIFICATION forming part of Letters yPatent No. 601,941, dated April5, 1898.`

Application filed January 1997, Serial No.l6 l9,29 5. (No model.) l Y ToLZZ whom it may concern..-

Be it known that L'MATTHIAS BROCK, of.

This invention has for its object to provide io a novel apparatus fordriving nails or equivalent fastenings, the invention being especiallyapplicable to apparatus of the class illustrated in Letters Patent oftheUnited States No. 537,269, issued to me under date 15 of April 9, 1895,in connection with which I have elected to herein illustrate anddescribe my invention.

In the apparatus illustratedin my patent above referred to the *nailsare delivered to the driver from a suitable raceway or conductorattached to the portable handpiece or case, this raceway having beenpreviously loaded in suitable manner as from a stationary loadingapparatus, such as is well known z5 in the art.

My present invention has for one ofits objects toprovide a hand-driverof the class referred'to with an improved receptacle for the nails,which receptacle shall be permanently attached to and movable with thehandpiece or case to automatically supply the nails or fastenings to thedriver as needed,

thereby obviating the necessity of ceasing work for the replenishing ofthe raceway from 3 5 a stationary loading apparatus or otherwise.v

In applying to a nailing apparatus of the class above referred to areceptacle containing in bull; the nails which are to be delivered tothe driver means must be provided for delivering the nails from thereceptacle to the driver or from some position from which they willreadily move to the driver.

Prior to my invention in hand nailing ap return movement of the driver.My enperience with apparatus of thisclass has .shownl me that thesuccess of the apparatus depends in a large measure upon the certaintywith which the nails are delivered to the driver or into position to bedriven bythe latter into the work and that this certainty of deliveranceofthe nails is increased in proportion to. the increase in the number'of movements of the nail-delivering means. In other words, the oftenerthe nail-delivering means operates the more certain will it be that asufficient number of nails or fastenings will be delivtion I employ anail-receptacle mounted to be rotated step by step in the same directionduring not only theA driving but the return movement of the driver, thisrotation ofA the receptacle serving to deliver the nails therefrom to aconductor leading to the driver,` al- -though my invention is not to berestricted `positively,'impelling or shooting the fastenlingsendwisedown the condnoting-passagel leading to thevdriver.

My invention comprehends other features, to be hereinafter more fullydescribed, and set forth in the claims. Y

In the drawings, Figure 1, in side elevation, shows a nailin g apparatuscontaining one embodiment of` my invention; Fig.` 2, arpartial rear sideelevation of the apparatus shown in Fig. l; Fig. 3, a rear side view ofthe apparatus shown in Fig. l, with many of the parts broken away andshown in section; Fig-4, a vertical sectional detail taken on thedottedline a: ac, Fig. 2;Fig. 5, opposite face views IOO of the gate to'be described; Fig. l6, a top or edge'view thereof; Fig. 7,a'perspective detail of one of the guide-blocks controlling the deliveryof the nails from the driver; Fig. 8, a detail of the end of theraceway; Fig. 9, a detail illustrating a wiper or clearer for clearingthe raceway where the latter leaves the receptacle; Fig. 10, a sectionaldetail showing the improved means cooperating with the gate for turningthe tack or fastening into proper angular position to enable it to enterthe conductor leading to the driver, and Fig. ll a detail illustratingone means for positively moving the fastening endwise down theconducting-passage leading to the driver.

Referring to the drawings in theA embodiment of my invention thereshown, the hand piece or case A, provided with a head A', the driver cl,arranged within the head, the tubular driver-bar d2, fitted with a capd6 and containing the spring d3, resting at one end against the said capand at its opposite end against a pin d4, the swinging gate e5, providedwit-h a shoulder 3, point 4E, the diagonal opening 5, and a notch 7,said gate being mounted upon the short shaft e6, encircled by a springes, which tends to move the said gate always in one direction opposed bythe arm e4 on the shaft e3, controlled by the arm e2, resting against acam-surface e on the driverbar referred to, are and may be of aconstruction substantially as shown in my said Patent No. 537,269, towhich reference may be had, like letters and figures representing likeor equivalent parts, although it should be un derstood that as theseparts do not constitute my present invention they may be varied orothers substituted therefor without departing from the spirit and scopeof this invention.

While the cam-su rface e for controlling the f movement of the gatereferred to is arranged and operates upon the parts substantially as .inmy former patent referred to, yet in this my present invention I havechanged said cam-surface in a manner to be hereinafter pointed out,whereby a result is accomplished which was neither shown nor describedin my former patent.

The nail-receptacle M for receiving the nails or other suitablefastenings to be used with the apparatus is suitably mounted upon orconnected with a part of the case A, so as to be movable freelytherewith, said receptacle, as herein shown, being cylindrical in formand loosely mounted upon the shaft m, held rigidly by a disk m', closingone side of the receptacle and constituting one wall there of, said diskin turn being supported by the raceway A2, attached to the case A.

Upon the exterior of the receptacle M, I have formed a series ofratchet-teeth m2, adapted to be engaged by the pawls m3 m4, the pawl m3being pivotally mounted upon an arm m5 of a bell-crank lever fulcrumedloosely upon the shaft m, and havingits other arm m6 reaching to theleft, Fig. l, into position at the side of the case A, where itisprovided with a pin m7, which passes through a curved slot m8 in thecase and is suitably connected with the reciprocating' driver ordriver-bar Within the case. Fast on the shaft m of the nail-receptacle,

and therefore held rigidly in position, is the upright arm m8, to theupper end of which I have attached at m9V the depending pawlcarrier m10,on the lower free end of which the pawl m4 is carried, said carrier m10being slotted, as at m11, to receive the shaft m, past which itvibrates, the said pawl-carrier m10 being connected with thearm m5 by apin m12 on the latter entering the slot m13 in the former.

It will be evident that as the driver is driven downwardly to drive anail the bell crank lever m5 m6 will be swung to the left,

Fig. l, causing the pawl m3 to drag loosely over the ratchet-teeth ofthe receptacle, the pin lm12 on the arm 'm5, however, throwing thepawl-carrier m10 also to the left, Fig. 10, causing its pawl m4 toengage one of the teeth of the ratchet and rotate the receptacle onestep in the direction of the arrow thereon. Return or rising movement ofthe driver moves the bell-crank lever in an opposite direction, causingits pawl m3 to engage one of the teeth of the ratchet and move saidreceptacle a step farther in the same direction as before, the pawl m4,however, during this movement dragging loosely over the teeth of theratchet. It will thus be seen that the receptacle is rotatedintermittently or step by step always in the same direction at eachdownward and also at each upwardmovement of the driver,

thereby doubling the number of steps or.

its interior with a plurality of buckets n,

(shown in outline in dotted lines, Fig. 3,) which as the receptacle isrotated, as described, pick up the nails or fastenin gs which gravitateto the bottom of the receptacle and carry the same in greater orv lessquantity to the top 4of the receptacle, where they are dumped ordeposited upon an inclined table n', secured to the stationary disk orwall m of the receptacle or to the raceway A2, lying at `the side of thesaid disk or wall, said inclined table causing the fastenings depositedthereupon to slide laterally out from the receptacle into the trough n2in the raceway A2, the points or shanks of the nails or fasteningsdropping into the trough, where they are supported by their headsresting upon the side walls of said trough or raceway.

The inclined table n' is shown as having itsv lower end rolled or turnedupwardly, as at nx, to better direct the flow of tacks laterallytherefrom.

\ Such tacks or fastenings as are not properly .deposited in the troughof the raceway A2 are "dropped therefrom into the cup o, secured to theouter side of the stationary wall of the receptacle, said cup having aninclined bottom to deflect the fastenings dropped thereinto back throughan opening o (see Fig. 3) again into the receptacle.

The cup 0 is shown providedv with 'a cover 02, hingedat o3 to the cupandacted upon'by a spring o4, arranged to hold said cover in either itsfully opened or closed position. To prevent any fastenings which rest onthe top of the raceway getting into the opening in the wall of the cupthrough which said raceway passes to the driver, and thereby stoppingthe downflow ofthe fastenings, Ihave herein provided a clearer, shown inthe form of va thin metal plate 20, Figs. 3 and `9,'overlying theraceway and removed from the top ofthe latter just sufficient to enablethe heads of the properlypositioned tacks'orfastenings to passthereunder down the raceway, said plate p being attached to and carriedby an arnrp'-, pivoted at p2 to the stationary side Wall ofthereceptacle, said arm being provided with a pin p3, arranged in the pathof movement of the ratchet-teeth of the receptacle, so that at eachstep-by-step-movement ofthe latter one of the teeth of the ratchet 'willengage Vthe pin pif and .move the .armpV 'outwardly away from the cup to'Withdraw somewhat the shield or clearer p, permitting the latter tosnap quickly back under the Vaction of the spring p4, Fig. 2, as thesaid pin p3 clears the toothV which moved it, due to the eccentricity ofthe axes about which the ratchet-teeth and the said arm respectivelymove. This sharp or quick vibration. of the clearer p hereintakes placeat each niovementof the receptacle-that is, ateach downward andcachupward move'- ment ofthe driver-and acts'to effectually clear theraceway of any loose tacks/or fastenings which Ymay chance to fallthereupon out of proper position to drop into the trough of the raceway.Forthe best results I provide the clearer p' with downwardly-extendedVears p5 at opposite sides ofthe raceway to better clear thelatterof anyfastenings which may lie crosswisethereof. 1 v v 1 Referringparticularly kto Figs. l, 3, 5, and l0, the fastenings ortacks'deposited inthe racewayor conductor A2 descend therein by gravity,supported by their. headsl resting upon the side walls of the conductor,the lowermost tack or fastening resting in the pocket formed by the lug3 ofthe gate e5, which crosses the raceway. Immediately above theraceway A2, I have arranged a fastener-impelling device for, impellingory shooting the fastening from the end ofthe conductor into the passageleading therefrom to the Ldriver, said device acting quicklyandpositivel-y to put the fastener into position to .be acted upon bythe driver, such action beingfar more certain than depending upongravity to fit the fastening into position to be struck byy the driver.This impelling device, as. I have chosenherein toillustrate the same, isrep-:f resented as a lever r', Fig. 1, pivoted'on the raceway at r andactedupon' by a spring r2, which presses said lever normally into itslowermost position, with the shoulder or downturned end r3 at its freeend lying in the path of movement of the heads of the tacks intheraceway, such shoulder or downturned end r3 being preferably concavedat-its face next the tacks in the raceway to better rece-ive and holdthe head of a tack, as will be described. l As the driver is moveddownwardly `within the caseA and withinthe nose A6, depending from saidcase, the cam -surface e on the `driver-bar moves the arm e4 outwardlyand permits the spring e8 to move theV gate e5 across the end of theraceway, thereby causing the point 4 of the said gate to engage thelowermost tack of the series, which tack was previously held inthepocket referred `to and by the diagonal face leading to said point 4force the said'tack in the direction of the driver, said point at thesame time entering between said lowermost andthe rest of theseries oftacks to hold back the series until the return of Vthe gate, when anewtack will slip intothe pocket.l As the lowermost tack referred to ispressed forward by the diagonal face of the gate its head will meet theconycaved shoulder rg on the lever rv and will be retarded or stoppedthereby in its movement,

l the said diagonal face, however, by its continued movement acting uponthe shank of the 1 tack'to press the said shank to the left, Figs.

l and 2, causing the tack to assume -a diagonal position, as shown inFig. 1Q, with its `point directed v away from the moving gate, Where itcannot be caught by the zlatter, in any of its movements, and morenearlyin a linewith the chute'd, into which it isy to be discharged. Thehead of .the tack is thus held, as shown in Fig'. l0, until thepressureA of the diagonal face of the gate, tending Vby its actiononitheshank to push it to the left, exceeds ythe resisting power of the springr2, holding the lever r inposition in front of the head of the tack,when said spring r2 will yield and permit'the said lever and shoulder torise and clear the headof .the tack; VThe* lower or shouldered end ofsaid lever r may be provided with what may be called a hamnier-face (rx,preferably flat, extended be` yond the front or concaved edge of saidshoulder, so that as the tack, under the action of vthe gate, lifts andclears said shoulder the return-of the lever to its normal position willcause the said hammer-face to strike the head of the tack to irnpel orpositively start the same down the chute and to thedriver. This insurescertainty of feed or delivery of the tacks tothe driver.

As the driver. rises for the neXtoperat-ion A this tack d rops into thedriver-passage into position between the two blocks w w, arranged atopposite sides of the driver-passage and' held in yielding contact oneagainst the other ,fjpy a suitable spring w', (shown best in Fig. 1,)Xsaid guide-blocks acting to properlycenter `thetack or fastening withinthe driver-pasroo IIO

driver in its further descent and be driven from the nose into the work.

It will be noted that in my apparatus as herein shown and described thecam-face e is provided with an initial incline ew, followed by arelatively long dwell c and a final incline @12, or said cam-face isotherwise shaped or connected with the gate e to cause an initialmovement of the gate to pick out orseparate a tack from the series inthe-raceway, then cause a relatively long dwell to give the tack soseparated full opportunity to center or position itself in readiness forfinal ejection and feeding,and, finally, j ust before the driver hasfinished its movement and after the driverpassage has been absolutelycleared of tacks the gate is given a final movement to free the tackfrom its holding-shoulder and drive the latter down the chute to thedriver-passage. This is of great importance, for it holds a tack frombeing dropped into the chute (t until after the tack previously droppedtherein has been Ipractically ejected from the apparatus, therebyeffectually preventing two or more tacks entering together the driver-passage and clogging the machine, which would be possible if the gatewere actuated early enough to permit a partial descent of the driver byaccident or otherwise to liberate a second tack before the first one hadbeen driven or ejected from the apparatus. The arrangement described isalso important, for so far as I am aware it for the first time gives adwell or. period of rest between the commencement and the end of thetack separating or feeding movement, which herein is a movement in onedirection, in which said tack can position itself for final and accuratefeed to the driver or tacker.

My invention is not limited to the particular embodiment herein shownand described, for the same may be varied without departing from thespirit and scope of my invention.

Having described my invention, what I .claim as new, and desire tosecure by Letters Patent, is-

l. A freely-portable hand-supported and hand-operated nailing apparatuscontaining in combination a casing adapted to be carried by the hand; afastening-receptacle mounted on said casing a reciprocatinghand-operabledriver and nail or fastening feeding means connected with and derivingfeeding movement from said driver, said feeding means and connectionsbetween the same and driver moving without change in direction duringmovement of said driver in any one direction, movement of said driverinopposite directions causing effective movement of said feeding meansalways in the same direction, substantially as described.

2. In a machine of the class described, the combination with areciprocating driver, of a fastening-receptacle, andintermittingly-operated means acting always in the same direction todeliver fastenings from the said re- -ceptacle for the said driver,'andsaid means being actuated by said driver during movement of the latterin one and also in an opposite direction, substantially as described.

3. A freely-portable hand-supported and hand-operated nailing apparatuscontaining in combination a casing adapted to `be carried by the hand, areciprocating hand-operable driver, and a rotatablefastening-receptacle, both mounted on said casing and devices actuatedby said driver to impart relatively slow and easy step-by-step rotationt0 said receptacle both on and during substantially the entire drivingand on the return movement of said driver, substantially as described.

4. In a nailing apparatus of the class described, a reciprocatingdriver, a casing, a rotatable fastening-receptacle on said casing andprovided interiorly with means to lift the containednails,nailconducting means to convey nails from said receptacle to saiddriver and means actuated by said driver to impart rotation to saidreceptacle during both the driving and also during the return movementof said driver said means tending to move said receptacle in but onedirection during movement of said driver in either direction.

5. The combination with the driver,the casing, a rotatable receptacleand means to impart step-by-step rotation thereto from said driverduring the driving and also during the return movement of the latter anda clearer arranged over and clearing the properly-positioned fasteningson said conductor and connecting devices intermediate said rotatablereceptacle and said clearer for communicating to the latter a vibratingmotion by and fromstep-by-'step rotation of the said receptacle.

6. lhe combination with the driver and its case, of a conductor toconvey fastenings to` the said driver, a spring-controlledfastenerimpelling device, having a stop-surface to engage the head of afastening from said conductor, and means acting upon the shank of thefastening to move the latter into inclined position while its head isyet engaged by said stop-surface, said impelling device being actuatedto release the fastening-head when the pressure upon the shank reaches apredetermined degree, substantially as described.

7. The combination with the driver,its case, and the conductor leadingto the-driver, of a yielding pivoted controller having a stop-surfaceand means engaging a fastening to press the head of such fasteningagainst such stopsurface first to position the fastening and then toturn said controller on its said pivot to free said fasteningsubstantially as described.

8. In a machine of the class described, the combination with a driver,and a fasteningconductor leading thereto, means for controlling t-hepassage of fastenings toward said driver, said means being constructedto furnish a dwell intermediate the beginning and IOO IIO

the end of 'its movement in one direction in .which a fastening canassume proper position for iinal and accurate movement, substantially asdescribed.

9. In a machine of the class described., the' combination with a driverand apfasteningconductor leading thereto, of a fastening separating andfeeding gatehaving a 'fastening-V separating point'to separate afasteningfrom a series of .fastenings, and 'means to impart to said gatean initial movement -to cause its said pointto Vseparate afastening, anda n'al fastening-feeding movement in the same direction assaidi'nitialmovement but separated from said initial movement by aperiodY of dwell,substantially as described.

lO. The combination with a fastening-conductor, of a single means toactupon a fastening in said conductor and move the said fastening into anew position to hold said fas. tening in its said new position so as toenable the said fastening to be positioned with certainty for asubsequent movement, andto finally impart such subsequent movement tosaid fastening, substantially as described. A

l1. In a machine of the class described, a driver and means to conveythe fastenings toward said driver, said means holding one' driver,combined with means to act upon a fastening so positioned to impel thesaid fastening endwise into,V the .-path'traversed by said driver,substantially as described.

12.,V In a machine of the class described, the combination with a driverand a fasteningconductcrleading thereto, of means to feed the fasteningsingly toward said driver, and a yielding impelling device to act uponand retard the movement of the head of a fasten'- ing, a face of,saidimpe'lling device acting as ahammer to positively impel a fasteningso retarded toward said driver, substantially as described. v A s j 13.In a fastening-drivingapparatus, aconductor to receive and ,guidefastenings, a driver, a fastening-passa'ge'in communication therewithand a springactuated impelling device to act on a fastening at the'endof said conductor and shootsaid fastening endwise into saidfastening-passage to be in position to be acted upon by said driver,substantially as described.

In," testimony whereof vI have signed my name tothis specification inthe presence of two subscribing witnesses. .y

. MATTHIAS BROOK. i Witnesses: f

FREDERICK L. EMERY, MARGARET A. DUNN. Y

